Power Steering Pump: Inspection
- Clean all parts in solvent. Clean residue from pump magnet. Inspect flow control valve for wear or damage. Inspect seal bore in housing for burrs, nicks or scoring. Inspect fit of vanes in rotor. Vanes must slide freely into rotor slots without binding.
- Excessively loose vanes require replacement of rotor and/or vanes. Examine inner surface of pump ring for heavy scuff or chatter marks. Inspect flat surfaces of pressure and thrust plates for wear or scoring.
- Light scoring can be removed by lapping on a flat surface. Inspect pump housing drive shaft bushing for excessive wear. Replace pump housing and bushing as an assembly if badly worn or scored. Replace any damaged or worn parts.